Safety hook



June 17 1924. v

H. c. STEPHENS ET AL SAFETY HOOK Filed July 18. 192.3

Q a N K) N m m fiv \s MFA/55556 Y K) H615 TEP'HEN HJ-T FAA 001.1

attouwq Patented June 17, 1924. i

UNITED STATES A v 4 1,497,997 PATENT OFFICE.

HOMER o. STEPHENS AND ERBERTE. RANDOLPH, 0F WEBB CITY, 'oKLAnoMA.

SAFETY HOOK.

Application flle d July 18, 1923. SeriaI No. 652,435.

To all to 7mm it may concern Bei knowntha't we, HOMER C. STEPHENS and HERBERT F. RANDOLPH, citizens of the United States, residing at \Vebb City, in the county of Osage and State of Oklahoma, havein'ven'ted certain new and useful Improvements in Safety Hooks, of which the following is a specification.

This invention relates to appliances used in the construction of oil wells and the primaryobject of the present invention is the provision of ain'ovel safety device for holding the wire line in position to keep the same from goingdown the well during the spudding in of oil wells, W A further object ofthe invention is the provision of a novel safety hook or clamp for holding thewire line in position against displacement embodying a shank having means for connecting one end thereof to a suitable supporting post, and a resilient means for gripping the line wire, which is so constructed, that the tighter the pull on the wire, the "tighter the clamp will be forced into engagement with the wire.

A further prime object, of the invention is the provision of an improved safety wire grip of the above purpose embodying the shank for connection with a supporting post, a jaw rigidly formed on one end of the shank of arcuate formation, and a rockable jaw or arcuate formation disposed in superimposed relation to the rigid jaw and so arranged in relation thereto as to be forced closer into engagement with the rigid jaw, when tension is placed upon the Wire line disposed between the jaws.

A still further object of the invention is to provide an improved safety hook for wire lines of well digging apparatus of the above character,which will be durable and efiicient in use, one that will be simple and easy to manufacture and one which can be placed upon the market at a small cost.

\Vith these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings, in which drawings:

Figure 1 is a perspective View of the improved safety hook or wire clamp.

Fi re 2 is a transverse section through the rigid and rockable jaws.

Figure 3 is a perspective view of the rockable jaw, and

"F igure at is a perspective view "of the bolt or pin "upon. which the rocka-ble "jaw is mounted. I V

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter A generally indicates the improved tool or wire clamp, which embodies an elongated sh-ank'5; The shank 5 haspivot'ally connected thereto at 'it'soufter end as at 6, a shackle or clevis 7, which permits the tool to beconne'cted tola suitable supporting post or the like 'injspaced relation to the derrick floor. The inner end the shank 5 has integrally formejd the transversely extending r igi'd jaw 8, *Wh'ich is provided with an arcuate activewire engaging face 9. One end of the jaw fBxha'S formed thereon the forwardly extending right angularly disposed supporting arm 10 which is provided at its outerend with the hearing 11 for receiving the supporting pin or bolt 12 for the rockable jaw 15. I

The rigid jaw 8 and the arm 10 are preferably braced by integral ribs 13, which extend from the shank 5 longitudinally across the jaw 8 and arm 10. The supportng 0r bolt 12 is of a cylindrical form and has one end provided with a polygonal head l l and its opposite end provided with .a reduced threaded extension 16, for a nut 17 which is adapted 'to be threaded on said 'extension 16 for firmly holding the "bolt "orpi'n in position on the "arm 10. V j j in The jaw 15 is rockably mounted up'o'n"the cylindrical portion of the bolt "or pin "1'2 and embodies the arcuate body portion 18 for forming the transverse arcuate j aw face 19, which is disposed in superimposed relation to the arcuate jaw face 9. The opposite terminals of the jaw body 18 supports parallel disposed pivot ears 20 which are provided with longitudinally aligned openings 21 for receiving the supporting bolt or pin 12. By this construction it can be seen that the jaw 15 is free to rock upon the bolt. I

In order to normally maintain the jaw 15 swung away from the jaw 9 and thus allow the ready insertion of the line wire between the jaw an expansion spring 22 is coiled about the bolt 12. This expansion spring 22 has one terminal thereof secured to the bolt as at 23 and its opposite terminals secured to the jaw 15 as at 24. The non active face of the jaw 15cm be cut awa as at 25 in order to permit the expansion and contraction of the said spring.

The ja'ws 8 and 9 at their ends remote from the arm 10 can be provided with lugs 26 and 27 respectively, which serve as means for limiting the inward swinging movement of the jaw and also provide means for preventing the slipping of the line wire from relation with the jaw 8 as greater tension is placed uponfthe line wire, thereby insuring a tight grip being had upon the line wire to'prevent the slipping thereof.

Changes in details may be made without departingfrom the spirit or the scope of this invention.

hat we claim as new is:

V 1. A line'wire gripping tool comprising a shank, a laterally extending rigid jaw projec'ting from one end of the shank and a movable, jaw associated with the shank and disposed in spaced parallel relation to the firstmentioned aw.

' 2. Ina line wiregripping tool, a longitudinally extending shank, a clevis pivoted to theouterend of the shank, a transversely extending rigid jaw projecting laterally from the inner end of the shank, a rockable jaw associated with the shank and disposed in spaced relation to the rigid jaw, and 0p positely directed active jaw faces formed on said jaws.

3. In a line wire gripping tool, an elongated shank, a elevispivotally secured to the outer end of the shank, and a transversely extending rigid jaw formed on the inner end of the-shank, a forwardly extending rigid arm formed onone end of the rigid jaw, a supporting bolt connected with the arm and arranged 1n spaced parallel relatlon to the rigid jaw, and a'rockable aw mounted upon said bolt, the jaws having their active jaw faces arcuate-shaped in cross section.

4. In a line wire gripping tool, an elongated shank, a pivoted clevis carried by one end of the shank, a transversely extending rigid jaw formed on the forward end of the shank, a rigid supporting arm formed on one end of the jaw, a bolt detachably connected with the arm and. arranged in spaced paral lel relation to the jaw, a movable jaw rockably mounted upon the bolt including an active face and pivot ears for receiving the bolt, and resilient means for normally holding the movable jaw in a predetermined position away from the rigid aw.

5. In a line wire gripping tool, an elongated shank, a pivoted shackle securedto the outer end of the shank, a rigid jaw formed on the inner end of the shank, a forwardly extending arm formed on one end of the jaw, a pivot bolt detachably secured with the arm arranged in spaced parallel relation to the rigid jaw, a movable jaw rockably mounted upon the bolt including an arcuate jawface and a pair of pivot ears forreceiving' thebolt, an expansion spring coiled about the bolt having its terminals connected respectively to the bolt and movable jaw forholding the movable jaw in a predetermined position in relation to the rigid jaw, the jaws being provided with oppositely directed arcuate jaw faces, and limiting stop lugsformed on the'meeting faces of said jaws.

In testimony whereof we affix our signatures in presence of two witnesses.

HOMER CL STEPHENS.

HERBERT F. RANDOLPH. Witnesses I A. L. Cox,

C. E. GHRIsMAN. 

